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All of a sudden my Windows XP PC can't read what is on SD cards and some USB sticks.

Even though the drive is detected, it shows it empty.

I don't have that problem reading the same cards on my iMac and everything was working fine before.

Is there anything I can do to resolve this problem?

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Staff? We are not staff? – Griffin Aug 30 '13 at 3:48
Can you try a different windows machine? – ForeverWintr Aug 30 '13 at 3:56
Might the problem be that the cards which don't work are formatted using a "Mac Only" Filesystem (HFS), rather then FAT? – davidgo Aug 30 '13 at 5:19
i did format all the cards to FAT 32, and i just did try the card and a usb stick on a windows laptop and the same cards worked fine (following advise of ForeverWintr) – Ossie Aug 30 '13 at 5:52
When you say "it shows it empty", what is the "it"? And by "empty", do you mean no filesystems? Or filesystems with no files? Or what? – David Schwartz Aug 30 '13 at 7:25

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